Automotive Technicians Technical Discussion and Fixes for Nov 24, 2010

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	Help Request	Answers
	2007 Alfa Romeo 156 2.0L Hesitation, Misfire, MIL Lamp on VIN: ZAR9320000 This car came from another sho with the description of misfire codes stored, mil on & an engine miss. Is had injectors cleaned, 1 new coil & new maf. When I drove it, it definately missed, but feels more like the engine is retarded, but it definately misses. L...	View
	1998 Buick Park Avenue Ultra 3.8L Unknown VIN: 1G4CU5210W This car has an intermittant problem. Sometimes it will not start and the windows will not operate. Let the car set a while and everything works ok. All power and ground connections from the battery to the under hood fuse box appear to be ok. We are thinking t...	View
	1991 Chevrolet Corvette 5.7L No Start VIN: 1G1YY2380M This car belongs to a friend of a friend, who has been working on it for a long time. A couple of monthes ago it failed to start, so they start checking it out and find chain jumped. Replaced that and no start. Mike checks things again, like fuel pressure, spa...	View
	1994 Chevrolet LLV 2.2L No Start VIN: 1GBCS104R2 Thanks in advance for any help, this vehicle will intermittently not restart after long periods of driving (cranks only) we have alot of history because we service this vehicle often. Iac has been cleaned and passages are clear. Fuel pressure relay and harness...	View
	2000 Chevrolet Express 2500 5.0L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GCFG25M5Y vehicle came in barely idling with definite rich smell, chugging exhaust output. does this all the time worsens as engine warms up. stalls when in gear especially on brakes. checked vacuum leaks, all parts listed were tried and or replaced. ohm'd harnesses inc... Trouble codes: P0300	View
	2001 Chevrolet Venture LS 3.4L Steering Pump VIN: 1GNDUO3E51 Hi fellow trench people. 2000 Chev Venture. 3400 engine. Power steering pump replacement.. There has to be a better way to get this pump out than using common sense. With the obvious stuff removed, how do I lift the pump out of it's hole. I have the tensioner...	View
	2004 Chevrolet Trailblazer LS 4.2L Flywheel VIN: 1GNDT13SX4 Dealership has replaced transmission twice before it came here. I replaced flywheel, they diagnosed it. When removing trans., bolts that went to oil pan were removed and part of the oilpan (ears)came off both sides. I showed cust. They took broken parts to dea...	View
	2004 Chevrolet Suburban 1500 LS 5.3L 4x4 VIN: 1GNFK16Z24 I am trying to find out if I can reprogram the transfer case control module with my snap on verus and my pass thru tool.I know that the module is programable but I can not find out if I need a tech2 or not.If anyone can help that would be great. Thanks	View
	2006 Chevrolet Colorado LS 2.8L Cuts out, Stall, Misfire VIN: 1GCCS14846 truck seemed to be flooded, replaced 4 spark plugs, starts and died, starts and died smokes real bad smells like deisel fuel, fuel presure ok, has missfire codes	View
	2001 Chrysler Town & Country LXi 3.8L Radio VIN: 2C8GPG4L51 I replaced the alternator and disconnect the battery ever sice than radio is not working and 3 equelizer lights are flashing only.radio is not working,there is message at bcm says " audio system messages not received" and i have no idea what the problem is.i n...	View
	2005 Dodge Caravan C/V 3.3L No Start VIN: 2D4GP24R85 Towed in no start. tested fuel and spark. occasional spark and fuel pulse. When it does, it trys to start. If it starts, barely runs and the cam/crank on the scanner shows -29 cam/crank varation. Also the timing is showing 120 btdc.Checked the flywheel for any...	View
	2006 Dodge Sprinter 2500 2.7L MIL Lamp on, Low Power VIN: WDOPD64486 I have this lovely Sprinter that has a problem completely unrelated to what we fixed or at least I think. Originally there was a faulty glow plug that turned out to be siezed and broke. We wound up removing the head to get that plug plus another extracted. The... Trouble codes: P2018 (Fuel rail pressure malfunctiontoo high), P2016 (Fuel rail pressure malfunctiontoo low)	View
	2000 Ferrari SCAGLIETTI .0L shift control VIN: ZFFAY54B00 Hello to all iatn members, this car came with the wrecker, i dont have any idea what did other workshop did in this car, the problem is not start. When i connect the stater relay pin#85 to ground it start, i think the problem is the park/neutral switch. The dt...	View
	1994 Ford F-350 XL 7.3L No Start VIN: 1FDKF38FOR Evening all- really hate to post this one but dont know what else to do-this t350 has not started well for a long time, glow plugs of course were recommended, has ran like crap for a long time, diagnosis recommended, long story short, we did brakes and master ...	View
	2004 Ford F-550 Super Duty XL 6.0L door switch VIN: 1FDAF57P64 in bcm doors show closed at all times and dome light does not come on when door is opened. radio stays on for so many minutes after key is shot off. i replaced the driver door switch and checked for pwr and ground on that circuit, all is good but scanner still...	View
	2005 Ford F-350 Super Duty XLT 6.0L No Start VIN: 1FTWW32P55 Hello, I'm working on this 6.0L diesel where it will start a few times in the morning and run great but after you shut the engine off it will not start again until you let it sit for about 14 hours until it gets completely cold. We have proper Rpm 150, ficm sy... Trouble codes: P012F	View
	2005 Ford F-250 Super Duty XLT 6.0L No Start, Cuts out, Stall VIN: 1FTSF20P55 hey guys, im having some trouble with a 2005 f250 6.0 diesel customer brought it on but if sits for overnight it wont turn on , i visually check all components every thingd look in place , i hooked a scanner and i retrieved this codes ))) p0261,p0264,p0267,p02...	View
	1998 GMC Savana 3500 6.5L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall VIN: 1GTHG35FXW I got this van from the dealer. They said it needed a new injection pump. I gave the customer a estimate and had the pump rebuilt locally. The van does the same thing. It will start and run cold but once it warms up after 20 to 30 minutes it dies and won't r...	View
	1998 Honda Civic LX 1.6L Heater VIN: 1HGEJ6572W First time customer, complaints of intermittant/insufficient heat. Vehicle is not overheating and does not appear to have head gasket issues. Coolant condition good. Vehicle heats to normal operating temp and radiator fans switch on and off appropriately. Heat...	View
	2006 Hyundai Sonata GLS 3.3L Hesitation, Misfire, MIL Lamp on VIN: 5NPEU46FU6 the car came in with a complaint off check engne light on and hessitates on acceleration and the check engine light would start blinking. i use the modis scan tool and all it tells me for codes is p0300 so i took it for a test drive and it runs fine till you t... Trouble codes: P0300	View
	1993 Jeep Grand Cherokee 5.2L No Start VIN: 1J8HR48N45 I have a 1993 zj with a 5.2 that has a starting problem. I've done a search and found a few posts of similar problems, but none with a fix. When you first turn the key on, the rig will not start. No MIL, no spark, no injector pulse, no fuel pump, no asd relay,...	View
	2005 Jeep Grand Cherokee Limited 5.7L no upshift VIN: 1J4GR48K85 Thanks in advance. have this 05 Jeep in the shop with a check engine lite on and a trans that wont up shift sometimes. when it acts up you can turn off the jeep and restart and it is fine. has no rhime or reason when it acts up. pulled codes and found P0700 , ...	View
	2005 Kia Amanti 3.5L Misfire, MIL Lamp on VIN: KNALD124X5 my shop with a hesitation or skip & c.e.l on.Ran diagnostis on vehicle & retrieved trouble codes PO350,PO300,PO301 & PO305.There is no skip @ idle but it does skip under a load.My diagnosis is faulty plug wires.Replaced faulty plug wires & replaced plugs with ... Trouble codes: P0300 (Random misfire), P0301, THRU, P0306, P0320 (Ignition falure sensor problem), P0350 (Primery or secondary ignition problem)	View
	2007 Lexus IS250 2.5L Stereo VIN: JTHBK262X7 Thanx everyone do not have any test info other than cheaking fuses. Stereo display comes on and show s station and volume even shows when you change volume but no sound. Sound is not muted and nav is off. Cheaked all fuses in all fuse boxes have very little to...	View
	1999 Lincoln Continental 4.6L Suspension VIN: 1LNHM97V7X Rear upper balljoints only come with 'REAR A FRAME' from ford for $400.00 a peice. I saw 2 recons on Ebay one time for $75.00 a peice. Does anybody know how we can get new balljoints for the rear installed in the old frames, without spending $800.00?? Is there...	View
	1989 Mercedes-Benz 560SL 5.6L Poor Idle Quality, Surge, Cuts out VIN: BA48D5KA10 Greetings MB techs! This 560SL has an unusual symptom of cycling the air injection pump relay off and at the same time the check engine light will flicker for a fraction of a second and the engine will stumble. Code 3 (coolant temp) was stored when the vehicle... Trouble codes: 3 (COOLANT TEMPERATURE one time)	View
	2005 Mini Cooper S 1.6L Hesitation, Cuts out, Stall, Misfire VIN: WMWRE33506 Hey everyone, I know it's Thanksgiving weekend, so any ideas you can share I greatly appreciate! I appologize in advance for the long post, trying to get my whole thought process in there for you. This car has me stumped. I've had it in on 3 ocassions for th... Trouble codes: P0300 (Random multiple misfire.)	View
	2002 Mitsubishi Galant ES 2.4L MIL Lamp on VIN: 4A3AA46G12 Vehicle showed up after a failed State Inspection with two codes P0335 and P0340 customer stated the motor was replaced by another repair shop and the CEL came on right away the repair shop tried to fix it but failed it was taken to another shop and the timing... Trouble codes: P0335, P0340	View
	1991 Nissan Sentra Classic 1.6L Excessive Emissions, Poor Fuel Economy VIN: 3N1PB21S4M I've had 3 attempts at diagnosing a 1991 Sentra that failed it's emissions test for Hydrocarbons and Carbon Monoxide. In Shopkey, I had to use a 1990 Sentra diagram in order to find a similar system. I have used information from Shopkey and the Chilton's manua...	View
	1991 Nissan Sentra XE 1.6L Radiator VIN: 1N4EB31B8M Please help the engine fans run most of the time temp goes up to only 198 and the radiator feels cold unless rev the engine up and down for a while i think its a flow issue because the temp doesnt ever go way up i have eliminated the air issue. Note the repair...	View
	1998 Toyota Camry LE 2.2L sound VIN: JT2BF22K5W hey guys. got this pain customers who is worried about an audable sound with key pad. He already has a keypad problem not working at times - checked the keypad battery and was good. he says he use to hear an audible beep ( not from the horn)when he used his re...	View
	2002 Volkswagen Passat GLS 2.8L Abs, Brake,Battery VIN: WVWVH63B12 Hi VW guys, need help: on this passat some of the dash lights stay on dim (abs,brake, battery, airbag)even taking the key out of the ignition. This causes "key off battery drain", and also most of the time the immobilizer gets triggered and the car will cran...	View
	2005 Volkswagen Jetta GL 2.0L engine VIN: 3VWRA69M25 I need some help from the VW people out there. Replaced the front cam seal on this Jetta. Vehicle was built in July of 2004, engine code bbw. Timing belt was soaked with oil. Disassemble, we marked everything. Cam gear to cam. Gear to head, marked crank gear. ...	View

Fixes & Summaries for All Makes and Models

	Fix/Summary	Answers
	2002 Audi Allroad Quattro 2.7L Master Cylinder VIN: WA1YD64BX2 Post repairs, this vehicle has been driven over 100 miles with no reoccurring problems. The customer states that no foreign fluids have been added to the system that would have caused the seals to swell. My replacement of the master cylinder (OEM-Ate) and fl...	10
	1989 Chevrolet K2500 Silverado 5.7L Late Shift VIN: 1GCFK24K4K i think i missed something in the job. i did take the pan off 3 times-1st time to check the pressure regulator line up and it was good, checked the set up and operation of the t/v valve relationship to the cable and it looked good. i still had high line pressu...	17
	1992 Chevrolet LLV 2.5L Poor Idle Quality, Surge VIN: 1GBCS10A2M THANKS FOR THE ADVICE, THE FIX HOWEVER WAS THE 02 SENSOR THE VEHICLES SPEC WAS 12 PSI AND WE HAD 19PSI. THE CAR WOULD ALSO RUN WITH BOOSTER DISCONNECTED THIS IS WHAT THROUGH US OFF. WHEN WATCHING SCAN DATA WE FOUND 02 STAYED RICH AND WE SAW INJECTOR PW FLUCUA...	10
	1998 Chevrolet Blazer LS 4.3L battery VIN: 1GNCT18W8W Still haven't found the problem, if the car sits overnight and I check the draw it is about 0.30 amp draw, so eventually it does come down to a safe level, but it takes at least 10-12 hours. Thanks for all the suggestions.. this one got me.	15
	2000 Chevrolet Cavalier 2.2L Headlights/DRL VIN: 1G1JF5244Y Thanks for all the helpful input. Those of you who mentioned broken wires were absolutely right. It ended up being the low beam splice connection near the right side headlight bulb. Repaired wiring & everything worked fine. Thanks again for all the help.	14
	2001 Chevrolet Express 3500 5.7L Steering VIN: 1GCHG39R51 thanks for the replies. so far so good on the fix. replaced the pump again and flushed the fluid. used synthetic fluid again will see what happens. replaced brake lite switch and that helped with the click noise when braking. so thanks again	9
	2002 Chevrolet Silverado 1500 5.3L gauges VIN: 2GCEK19742 Sorry it took so long to close.I was researching the vehicle and the customer went on vacation on the day he was going to bring it in.Well I finally got to look at it after all the replies I got.All said to try a ignition switch,but after checking the fuses af...	9
	2003 Chevrolet Cavalier LS 2.2L battery/alternator VIN: 1G1JC53F43 first off i want to thank all who offered advise on this vehicle. i received alot of good input, but non hit the mark on this strange problem. double and triple checked everything related to the charging system and came up empty as to why this vehicle was not ...	20
	2003 Chevrolet S10 LS 2.2L Surge, Cuts out, MIL Lamp on VIN: 1GCCS19H93 hello everyone thank you for your input i requested the customer to leave the vehicle for a full day to due further inspections but cust has yet to return will save all information provided and thanks again Trouble codes: P0420 (Cat code), C0265 (Ebcm relay circuit).	11
	2006 Chevrolet Impala LT 3.9L abs VIN: 2G1WC58156 AS MOST OF YOU SAID, ABS/TRAC CONT. PROBLEM WAS RELATED TO A DTC SET IN THE PCM - FUEL SYSTEM LEAN -HOSE NOT CONNECTED TO AIR INLET HOSE BY THROTTLE BODY - CORRECTED THAT PROBLEM AND THE ABS/TRAC WARNING LIGHT CLEARED UP AS WELL. THANKS FOR THE HELP.	7
	1997 Chrysler Sebring LX 2.5L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire VIN: 4C3AU42NXV Replaced the map sensor and cleaned the injectors with no change in problem. Customer does not want to spend the money on a new distributor at the moment.	12
	1998 Dodge Stratus 2.4L MIL Lamp on VIN: 1B3EJ46X7W customer stated the check engine light went out and has stayed out.possibly an intermittent electrical problem as some had stated.thanks for the good replies and if the car ever acts up again i will reopen the request,thanks again Trouble codes: P1490, P1495, P0645.	4
	2006 Ford E-350 Super Duty 6.0L Abs Light On VIN: 1FTWW32P36 VERY LIMIITED INFO WAS FOUND FOR THIS CODE, WE DID CHECK WHEEL SPEED SENSOR AS SUGGESTED BY POSTER BUT NO METAL WAS FOUND. I STLL DO NO KNOW HOW IT COULD BE A SPEED SENSOR ,THIS CODE DEALS WITH A BUS FAULT. ALL WIREING WAS CONFIRMED OK AND WE REPLACED MODULE	3
	2006 GMC Envoy SLT 4.2L block heater VIN: 1GKDT13S76 replaced block heater and cord . found cord was not plugged into heater all the way causing cord to arc , burt cord end and heater contachs . poor warrenty install ! thanks all.	5
	2000 Honda Accord SE 2.3L oil pressure VIN: JHMCG6690Y Thank you for all the responses...as usual. Well it looks like it's the old, replace with OE parts story. Seems that this V-Tech oiling system is a higher than usual oil pressure system, especially when cold. The Carquest oil pressure sensor could not hold up ...	11
	2002 Jeep Liberty Limited 3.7L coolant VIN: 1J4GL58K32 Thanks for the patience everyone. Well the insurance company totaled the Jeep after hitting the deer, so case closed on this one. Thanks for all the replies. I was looking forward to digging in to this some more...maybe next time!	8
	2000 Kia Sportage 2.0L Poor Idle Quality, Hesitation, MIL Lamp on Had 4 replies. One reply from Jon answered the question I wanted an answer to. My snap on scanner was showing tps at 52% at full throttle. I thought I should fix this problem first for my high idle,rough cruising problem. Jon said the percentage is an interpre...	4
	2003 Land Rover Discovery S 4.6L Cylinder #6 VIN: SALTW16483 First let me thank everyone for the time taken to assist us. I want to especially thank Jon [...] for the article he wrote about this issue with the 4.6 Disco motors which can be read @ . So the answer to my question is, ...	10
	2003 Lincoln Town Car Signature 4.6L floor VIN: 1LNHM82W33 Thank you to everyone who helped. It WAS the drain for the evaporator. It was clogged. I also had to reseal the housing.	11
	2002 Mercedes-Benz ML500 5.0L Misfire VIN: 4JGAB75E62 Based on my diagnosis and the assistance of you guys on IATN. I recommended that the customer replace the ignition wires and spark plugs. Customer declined the $300 tune up.	7
	2002 Mercedes-Benz ML320 3.2L Cuts out VIN: 4JGAB54E12 thanks for the information shared with me, on this vehicle, we check all the wiring to the pedal position sensor, then to the engine control module, there was any problem detected. connected lab scope to monitore the pedal sensor, while drive the vehicle, al... Trouble codes: P2082 (G3/3 left o2 sensor short in the signal line), P20DE, P20CF.	4
	2003 Nissan Murano SL 3.5L brake pedal VIN: JN8AZ08W73 I cleaned the check valve in the vacuum line. seems to have fixed the problem.	5
	2005 Nissan Sentra 1.8L No Start VIN: 3N1CB51D15 Had no injector pulse this morning so I checked fuse which was good. Checked all other fuses which were also good. Hooked scanner up to it to watch injector pulse on scanner and car started. Now runs fine with no codes . May have been loose fuse . Do not know... Trouble codes: P0340 (camshaft position circuit).	11
	1997 Pontiac Grand Prix GT 3.8L keyless entry VIN: 1G2WP52K5V Thanks for the help on the keyless entry problem. But this was one of those problem.s that drive use nuts. Being an old GM guy,rechecking the circuits over and over, I said it was time to punt.I installed an aftermarket keyless entry system and all is well. TH...	4
	1999 Pontiac Grand Prix GT 3.8L maf VIN: 1G2WJ52M1X Computer was a 3.8 pcm and the engine was a 3.1. Whoever changed the engine did not change the computer.	19
	2003 Saab 9-3 Linear 2.0L Charging VIN: YS3FB49S03 thanks for all the replies! For some reason we have power in pin1 blue wire, But the alternator wont charge still. So we replaced the alternator and NOW the battery is getting charged. Thanks for the Help everyone! Mike	4
	1999 Subaru Impreza Outback 2.2L MIL Lamp on VIN: JF1GF4853X New A/F sensor was the fix. Things learned: The A/F sensor is supposed to become active very very quickly after start-up, even on a cold start. Within about 5 seconds the voltage on the scan tool should start changing. It starts at 3.7V, then starts moving, ... Trouble codes: P1130 (Front oxygen a/f sensor circuit malfunction open circuit).	5
	2005 Subaru Legacy GT 2.5L Engine VIN: 4S3BL66542 Thanks everyone for the help! I decided to close this because im gonna be gone over the holidays. I have found the problem tho. I had failed to mention that i had already checked exhaust backpressure and it was fine. I had done enough of these to know i had th...	11
	1996 Suzuki Sidekick JA 1.6L Cuts out VIN: 2S3TA02C2T The only suggestion I received was for a rub through under the intake. This is what I suspect . I discussed the possibility with the owner and he decided to take it away so he and his son can work on it on weekends. If I hear of the cause and resolution, I wil...	2
	1992 Toyota Camry 2.2L Excessive Emissions, Poor Idle Quality, Hesitation, Poor Fuel Economy VIN: JT2SK12E0N Hello well its fixed went back checked over everything.so we pulled the distributor what do you know the roll pin broke and let the shaft twist enough to throw off the spark timing installed new distributor everything fine now thanks to everyone who replyed	4
	2001 Toyota Sienna CE 3.0L No Start VIN: 4T3ZF19C51 Turned key into on position and let it sit for 30 min and then vehicle started. Left vehicle running for customer to take to dealer so don't know if vehicle restarted after initial start and was not able to scan for codes to see if the b2796 code was present ... Trouble codes: P1155, B2796.	2
	2002 Toyota Camry XLE 3.0L VSC/TRAC OFF/ABS lights on VIN: 4T1BF30K52 A failed traction control module was the cause of the no communication and inability to perform the zero point initialization. We had tested power and grounds to the control module and found all good. We checked the 5 volt reference line as well and found g...	3
	2001 Volkswagen Beetle GL 2.0L Unknown VIN: 3VWCS21C21 Unfortunately we have not fixed this one and from all of my research I appear to be the second person with the same noise and their's was not fixed either. It is clearly a harmonic resonance that happens with the transmission speed of 50-70 mph. We ran it on...	12
	2001 Volkswagen Beetle GLS 1.8L transmission fluid VIN: 3VWCD21C91 thanks for the replys guys, from what you guys are saying sounds like replacing the seal at the harness won't cure the leak, that seems to be a converter drain back issue. I will discuss this with the customer to decide on repairs... thanks again	5
	1998 Volvo S70 GLT 2.4L Misfire VIN: YV1LS5671W I received 5 replies to my request for help , none of them did any good . We only have this car 1 day a week when the guy is off work on Tuesdays so we are limited as to what we can do. The car has improved we can get thwe check engine light to stay off for 50... Trouble codes: P0302 (Cylinder 2 misfire), P0300 (Random/multiple cylinder misfire), P0305 (Cylinder 5 misfire), P0304.	12
	2000 Volvo S40 1.9L No Start, Poor Idle Quality VIN: YV1VS2552Y Many thanks fellows. A new f/p regulator fixed the car. On the bench the old one showed a very slight leak down of vacumn. Happy Thanksgiving! Trouble codes: P0300 (p0303-), P0303 (testing and results).	5

(Also Available: All, Asian, Chrysler, European, Ford, GM.)